cmd/usb.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * Adapted for U-Boot driver model
   6  * (C) Copyright 2015 Google, Inc
   7  *
   8  * Most of this source has been derived from the Linux USB
   9  * project.
  10  *
  11  * SPDX-License-Identifier:     GPL-2.0+
  12  */
  13
  14 #include <common.h>
  15 #include <command.h>
  16 #include <console.h>
  17 #include <dm.h>
  18 #include <memalign.h>
  19 #include <asm/byteorder.h>
  20 #include <asm/unaligned.h>
  21 #include <part.h>
  22 #include <usb.h>
  23
  24 #ifdef CONFIG_USB_STORAGE
  25 static int usb_stor_curr_dev = -1; /* current device */
  26 #endif
  27 #if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
  28 static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
  29 #endif
  30
  31 /* some display routines (info command) */
  32 static char *usb_get_class_desc(unsigned char dclass)
  33 {
  34         switch (dclass) {
  35         case USB_CLASS_PER_INTERFACE:
  36                 return "See Interface";
  37         case USB_CLASS_AUDIO:
  38                 return "Audio";
  39         case USB_CLASS_COMM:
  40                 return "Communication";
  41         case USB_CLASS_HID:
  42                 return "Human Interface";
  43         case USB_CLASS_PRINTER:
  44                 return "Printer";
  45         case USB_CLASS_MASS_STORAGE:
  46                 return "Mass Storage";
  47         case USB_CLASS_HUB:
  48                 return "Hub";
  49         case USB_CLASS_DATA:
  50                 return "CDC Data";
  51         case USB_CLASS_VENDOR_SPEC:
  52                 return "Vendor specific";
  53         default:
  54                 return "";
  55         }
  56 }
  57
  58 static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
  59                                   unsigned char proto)
  60 {
  61         switch (dclass) {
  62         case USB_CLASS_PER_INTERFACE:
  63                 printf("See Interface");
  64                 break;
  65         case USB_CLASS_HID:
  66                 printf("Human Interface, Subclass: ");
  67                 switch (subclass) {
  68                 case USB_SUB_HID_NONE:
  69                         printf("None");
  70                         break;
  71                 case USB_SUB_HID_BOOT:
  72                         printf("Boot ");
  73                         switch (proto) {
  74                         case USB_PROT_HID_NONE:
  75                                 printf("None");
  76                                 break;
  77                         case USB_PROT_HID_KEYBOARD:
  78                                 printf("Keyboard");
  79                                 break;
  80                         case USB_PROT_HID_MOUSE:
  81                                 printf("Mouse");
  82                                 break;
  83                         default:
  84                                 printf("reserved");
  85                                 break;
  86                         }
  87                         break;
  88                 default:
  89                         printf("reserved");
  90                         break;
  91                 }
  92                 break;
  93         case USB_CLASS_MASS_STORAGE:
  94                 printf("Mass Storage, ");
  95                 switch (subclass) {
  96                 case US_SC_RBC:
  97                         printf("RBC ");
  98                         break;
  99                 case US_SC_8020:
 100                         printf("SFF-8020i (ATAPI)");
 101                         break;
 102                 case US_SC_QIC:
 103                         printf("QIC-157 (Tape)");
 104                         break;
 105                 case US_SC_UFI:
 106                         printf("UFI");
 107                         break;
 108                 case US_SC_8070:
 109                         printf("SFF-8070");
 110                         break;
 111                 case US_SC_SCSI:
 112                         printf("Transp. SCSI");
 113                         break;
 114                 default:
 115                         printf("reserved");
 116                         break;
 117                 }
 118                 printf(", ");
 119                 switch (proto) {
 120                 case US_PR_CB:
 121                         printf("Command/Bulk");
 122                         break;
 123                 case US_PR_CBI:
 124                         printf("Command/Bulk/Int");
 125                         break;
 126                 case US_PR_BULK:
 127                         printf("Bulk only");
 128                         break;
 129                 default:
 130                         printf("reserved");
 131                         break;
 132                 }
 133                 break;
 134         default:
 135                 printf("%s", usb_get_class_desc(dclass));
 136                 break;
 137         }
 138 }
 139
 140 static void usb_display_string(struct usb_device *dev, int index)
 141 {
 142         ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
 143
 144         if (index != 0) {
 145                 if (usb_string(dev, index, &buffer[0], 256) > 0)
 146                         printf("String: \"%s\"", buffer);
 147         }
 148 }
 149
 150 static void usb_display_desc(struct usb_device *dev)
 151 {
 152         if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
 153                 printf("%d: %s,  USB Revision %x.%x\n", dev->devnum,
 154                 usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
 155                                    (dev->descriptor.bcdUSB>>8) & 0xff,
 156                                    dev->descriptor.bcdUSB & 0xff);
 157
 158                 if (strlen(dev->mf) || strlen(dev->prod) ||
 159                     strlen(dev->serial))
 160                         printf(" - %s %s %s\n", dev->mf, dev->prod,
 161                                 dev->serial);
 162                 if (dev->descriptor.bDeviceClass) {
 163                         printf(" - Class: ");
 164                         usb_display_class_sub(dev->descriptor.bDeviceClass,
 165                                               dev->descriptor.bDeviceSubClass,
 166                                               dev->descriptor.bDeviceProtocol);
 167                         printf("\n");
 168                 } else {
 169                         printf(" - Class: (from Interface) %s\n",
 170                                usb_get_class_desc(
 171                                 dev->config.if_desc[0].desc.bInterfaceClass));
 172                 }
 173                 printf(" - PacketSize: %d  Configurations: %d\n",
 174                         dev->descriptor.bMaxPacketSize0,
 175                         dev->descriptor.bNumConfigurations);
 176                 printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",
 177                         dev->descriptor.idVendor, dev->descriptor.idProduct,
 178                         (dev->descriptor.bcdDevice>>8) & 0xff,
 179                         dev->descriptor.bcdDevice & 0xff);
 180         }
 181
 182 }
 183
 184 static void usb_display_conf_desc(struct usb_config_descriptor *config,
 185                                   struct usb_device *dev)
 186 {
 187         printf("   Configuration: %d\n", config->bConfigurationValue);
 188         printf("   - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
 189                (config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
 190                (config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
 191                 config->bMaxPower*2);
 192         if (config->iConfiguration) {
 193                 printf("   - ");
 194                 usb_display_string(dev, config->iConfiguration);
 195                 printf("\n");
 196         }
 197 }
 198
 199 static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
 200                                 struct usb_device *dev)
 201 {
 202         printf("     Interface: %d\n", ifdesc->bInterfaceNumber);
 203         printf("     - Alternate Setting %d, Endpoints: %d\n",
 204                 ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
 205         printf("     - Class ");
 206         usb_display_class_sub(ifdesc->bInterfaceClass,
 207                 ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
 208         printf("\n");
 209         if (ifdesc->iInterface) {
 210                 printf("     - ");
 211                 usb_display_string(dev, ifdesc->iInterface);
 212                 printf("\n");
 213         }
 214 }
 215
 216 static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
 217 {
 218         printf("     - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
 219                 (epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
 220         switch ((epdesc->bmAttributes & 0x03)) {
 221         case 0:
 222                 printf("Control");
 223                 break;
 224         case 1:
 225                 printf("Isochronous");
 226                 break;
 227         case 2:
 228                 printf("Bulk");
 229                 break;
 230         case 3:
 231                 printf("Interrupt");
 232                 break;
 233         }
 234         printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
 235         if ((epdesc->bmAttributes & 0x03) == 0x3)
 236                 printf(" Interval %dms", epdesc->bInterval);
 237         printf("\n");
 238 }
 239
 240 /* main routine to diasplay the configs, interfaces and endpoints */
 241 static void usb_display_config(struct usb_device *dev)
 242 {
 243         struct usb_config *config;
 244         struct usb_interface *ifdesc;
 245         struct usb_endpoint_descriptor *epdesc;
 246         int i, ii;
 247
 248         config = &dev->config;
 249         usb_display_conf_desc(&config->desc, dev);
 250         for (i = 0; i < config->no_of_if; i++) {
 251                 ifdesc = &config->if_desc[i];
 252                 usb_display_if_desc(&ifdesc->desc, dev);
 253                 for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
 254                         epdesc = &ifdesc->ep_desc[ii];
 255                         usb_display_ep_desc(epdesc);
 256                 }
 257         }
 258         printf("\n");
 259 }
 260
 261 /*
 262  * With driver model this isn't right since we can have multiple controllers
 263  * and the device numbering starts at 1 on each bus.
 264  * TODO(sjg@chromium.org): Add a way to specify the controller/bus.
 265  */
 266 static struct usb_device *usb_find_device(int devnum)
 267 {
 268 #ifdef CONFIG_DM_USB
 269         struct usb_device *udev;
 270         struct udevice *hub;
 271         struct uclass *uc;
 272         int ret;
 273
 274         /* Device addresses start at 1 */
 275         devnum++;
 276         ret = uclass_get(UCLASS_USB_HUB, &uc);
 277         if (ret)
 278                 return NULL;
 279
 280         uclass_foreach_dev(hub, uc) {
 281                 struct udevice *dev;
 282
 283                 if (!device_active(hub))
 284                         continue;
 285                 udev = dev_get_parent_priv(hub);
 286                 if (udev->devnum == devnum)
 287                         return udev;
 288
 289                 for (device_find_first_child(hub, &dev);
 290                      dev;
 291                      device_find_next_child(&dev)) {
 292                         if (!device_active(hub))
 293                                 continue;
 294
 295                         udev = dev_get_parent_priv(dev);
 296                         if (udev->devnum == devnum)
 297                                 return udev;
 298                 }
 299         }
 300 #else
 301         struct usb_device *udev;
 302         int d;
 303
 304         for (d = 0; d < USB_MAX_DEVICE; d++) {
 305                 udev = usb_get_dev_index(d);
 306                 if (udev == NULL)
 307                         return NULL;
 308                 if (udev->devnum == devnum)
 309                         return udev;
 310         }
 311 #endif
 312
 313         return NULL;
 314 }
 315
 316 static inline char *portspeed(int speed)
 317 {
 318         char *speed_str;
 319
 320         switch (speed) {
 321         case USB_SPEED_SUPER:
 322                 speed_str = "5 Gb/s";
 323                 break;
 324         case USB_SPEED_HIGH:
 325                 speed_str = "480 Mb/s";
 326                 break;
 327         case USB_SPEED_LOW:
 328                 speed_str = "1.5 Mb/s";
 329                 break;
 330         default:
 331                 speed_str = "12 Mb/s";
 332                 break;
 333         }
 334
 335         return speed_str;
 336 }
 337
 338 /* shows the device tree recursively */
 339 static void usb_show_tree_graph(struct usb_device *dev, char *pre)
 340 {
 341         int index;
 342         int has_child, last_child;
 343
 344         index = strlen(pre);
 345         printf(" %s", pre);
 346 #ifdef CONFIG_DM_USB
 347         has_child = device_has_active_children(dev->dev);
 348 #else
 349         /* check if the device has connected children */
 350         int i;
 351
 352         has_child = 0;
 353         for (i = 0; i < dev->maxchild; i++) {
 354                 if (dev->children[i] != NULL)
 355                         has_child = 1;
 356         }
 357 #endif
 358         /* check if we are the last one */
 359 #ifdef CONFIG_DM_USB
 360         /* Not the root of the usb tree? */
 361         if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
 362                 last_child = device_is_last_sibling(dev->dev);
 363 #else
 364         if (dev->parent != NULL) { /* not root? */
 365                 last_child = 1;
 366                 for (i = 0; i < dev->parent->maxchild; i++) {
 367                         /* search for children */
 368                         if (dev->parent->children[i] == dev) {
 369                                 /* found our pointer, see if we have a
 370                                  * little sister
 371                                  */
 372                                 while (i++ < dev->parent->maxchild) {
 373                                         if (dev->parent->children[i] != NULL) {
 374                                                 /* found a sister */
 375                                                 last_child = 0;
 376                                                 break;
 377                                         } /* if */
 378                                 } /* while */
 379                         } /* device found */
 380                 } /* for all children of the parent */
 381 #endif
 382                 printf("\b+-");
 383                 /* correct last child */
 384                 if (last_child && index)
 385                         pre[index-1] = ' ';
 386         } /* if not root hub */
 387         else
 388                 printf(" ");
 389         printf("%d ", dev->devnum);
 390         pre[index++] = ' ';
 391         pre[index++] = has_child ? '|' : ' ';
 392         pre[index] = 0;
 393         printf(" %s (%s, %dmA)\n", usb_get_class_desc(
 394                                         dev->config.if_desc[0].desc.bInterfaceClass),
 395                                         portspeed(dev->speed),
 396                                         dev->config.desc.bMaxPower * 2);
 397         if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
 398                 printf(" %s  %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
 399         printf(" %s\n", pre);
 400 #ifdef CONFIG_DM_USB
 401         struct udevice *child;
 402
 403         for (device_find_first_child(dev->dev, &child);
 404              child;
 405              device_find_next_child(&child)) {
 406                 struct usb_device *udev;
 407
 408                 if (!device_active(child))
 409                         continue;
 410
 411                 udev = dev_get_parent_priv(child);
 412
 413                 /* Ignore emulators, we only want real devices */
 414                 if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
 415                         usb_show_tree_graph(udev, pre);
 416                         pre[index] = 0;
 417                 }
 418         }
 419 #else
 420         if (dev->maxchild > 0) {
 421                 for (i = 0; i < dev->maxchild; i++) {
 422                         if (dev->children[i] != NULL) {
 423                                 usb_show_tree_graph(dev->children[i], pre);
 424                                 pre[index] = 0;
 425                         }
 426                 }
 427         }
 428 #endif
 429 }
 430
 431 /* main routine for the tree command */
 432 static void usb_show_subtree(struct usb_device *dev)
 433 {
 434         char preamble[32];
 435
 436         memset(preamble, '\0', sizeof(preamble));
 437         usb_show_tree_graph(dev, &preamble[0]);
 438 }
 439
 440 void usb_show_tree(void)
 441 {
 442 #ifdef CONFIG_DM_USB
 443         struct udevice *bus;
 444
 445         for (uclass_first_device(UCLASS_USB, &bus);
 446                 bus;
 447                 uclass_next_device(&bus)) {
 448                 struct usb_device *udev;
 449                 struct udevice *dev;
 450
 451                 device_find_first_child(bus, &dev);
 452                 if (dev && device_active(dev)) {
 453                         udev = dev_get_parent_priv(dev);
 454                         usb_show_subtree(udev);
 455                 }
 456         }
 457 #else
 458         struct usb_device *udev;
 459         int i;
 460
 461         for (i = 0; i < USB_MAX_DEVICE; i++) {
 462                 udev = usb_get_dev_index(i);
 463                 if (udev == NULL)
 464                         break;
 465                 if (udev->parent == NULL)
 466                         usb_show_subtree(udev);
 467         }
 468 #endif
 469 }
 470
 471 static int usb_test(struct usb_device *dev, int port, char* arg)
 472 {
 473         int mode;
 474
 475         if (port > dev->maxchild) {
 476                 printf("Device is no hub or does not have %d ports.\n", port);
 477                 return 1;
 478         }
 479
 480         switch (arg[0]) {
 481         case 'J':
 482         case 'j':
 483                 printf("Setting Test_J mode");
 484                 mode = USB_TEST_MODE_J;
 485                 break;
 486         case 'K':
 487         case 'k':
 488                 printf("Setting Test_K mode");
 489                 mode = USB_TEST_MODE_K;
 490                 break;
 491         case 'S':
 492         case 's':
 493                 printf("Setting Test_SE0_NAK mode");
 494                 mode = USB_TEST_MODE_SE0_NAK;
 495                 break;
 496         case 'P':
 497         case 'p':
 498                 printf("Setting Test_Packet mode");
 499                 mode = USB_TEST_MODE_PACKET;
 500                 break;
 501         case 'F':
 502         case 'f':
 503                 printf("Setting Test_Force_Enable mode");
 504                 mode = USB_TEST_MODE_FORCE_ENABLE;
 505                 break;
 506         default:
 507                 printf("Unrecognized test mode: %s\nAvailable modes: "
 508                        "J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
 509                 return 1;
 510         }
 511
 512         if (port)
 513                 printf(" on downstream facing port %d...\n", port);
 514         else
 515                 printf(" on upstream facing port...\n");
 516
 517         if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
 518                             port ? USB_RT_PORT : USB_RECIP_DEVICE,
 519                             port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
 520                             (mode << 8) | port,
 521                             NULL, 0, USB_CNTL_TIMEOUT) == -1) {
 522                 printf("Error during SET_FEATURE.\n");
 523                 return 1;
 524         } else {
 525                 printf("Test mode successfully set. Use 'usb start' "
 526                        "to return to normal operation.\n");
 527                 return 0;
 528         }
 529 }
 530
 531
 532 /******************************************************************************
 533  * usb boot command intepreter. Derived from diskboot
 534  */
 535 #ifdef CONFIG_USB_STORAGE
 536 static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 537 {
 538         return common_diskboot(cmdtp, "usb", argc, argv);
 539 }
 540 #endif /* CONFIG_USB_STORAGE */
 541
 542 static int do_usb_stop_keyboard(int force)
 543 {
 544 #ifdef CONFIG_USB_KEYBOARD
 545         if (usb_kbd_deregister(force) != 0) {
 546                 printf("USB not stopped: usbkbd still using USB\n");
 547                 return 1;
 548         }
 549 #endif
 550         return 0;
 551 }
 552
 553 static void do_usb_start(void)
 554 {
 555         bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
 556
 557         if (usb_init() < 0)
 558                 return;
 559
 560         /* Driver model will probe the devices as they are found */
 561 #ifndef CONFIG_DM_USB
 562 # ifdef CONFIG_USB_STORAGE
 563         /* try to recognize storage devices immediately */
 564         usb_stor_curr_dev = usb_stor_scan(1);
 565 # endif
 566 # ifdef CONFIG_USB_KEYBOARD
 567         drv_usb_kbd_init();
 568 # endif
 569 #endif /* !CONFIG_DM_USB */
 570 #ifdef CONFIG_USB_HOST_ETHER
 571 # ifdef CONFIG_DM_ETH
 572 #  ifndef CONFIG_DM_USB
 573 #   error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
 574 #  endif
 575 # else
 576         /* try to recognize ethernet devices immediately */
 577         usb_ether_curr_dev = usb_host_eth_scan(1);
 578 # endif
 579 #endif
 580 }
 581
 582 #ifdef CONFIG_DM_USB
 583 static void show_info(struct udevice *dev)
 584 {
 585         struct udevice *child;
 586         struct usb_device *udev;
 587
 588         udev = dev_get_parent_priv(dev);
 589         usb_display_desc(udev);
 590         usb_display_config(udev);
 591         for (device_find_first_child(dev, &child);
 592              child;
 593              device_find_next_child(&child)) {
 594                 if (device_active(child))
 595                         show_info(child);
 596         }
 597 }
 598
 599 static int usb_device_info(void)
 600 {
 601         struct udevice *bus;
 602
 603         for (uclass_first_device(UCLASS_USB, &bus);
 604              bus;
 605              uclass_next_device(&bus)) {
 606                 struct udevice *hub;
 607
 608                 device_find_first_child(bus, &hub);
 609                 if (device_get_uclass_id(hub) == UCLASS_USB_HUB &&
 610                     device_active(hub)) {
 611                         show_info(hub);
 612                 }
 613         }
 614
 615         return 0;
 616 }
 617 #endif
 618
 619 /******************************************************************************
 620  * usb command intepreter
 621  */
 622 static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 623 {
 624         struct usb_device *udev = NULL;
 625         int i;
 626         extern char usb_started;
 627 #ifdef CONFIG_USB_STORAGE
 628         block_dev_desc_t *stor_dev;
 629 #endif
 630
 631         if (argc < 2)
 632                 return CMD_RET_USAGE;
 633
 634         if (strncmp(argv[1], "start", 5) == 0) {
 635                 if (usb_started)
 636                         return 0; /* Already started */
 637                 printf("starting USB...\n");
 638                 do_usb_start();
 639                 return 0;
 640         }
 641
 642         if (strncmp(argv[1], "reset", 5) == 0) {
 643                 printf("resetting USB...\n");
 644                 if (do_usb_stop_keyboard(1) != 0)
 645                         return 1;
 646                 usb_stop();
 647                 do_usb_start();
 648                 return 0;
 649         }
 650         if (strncmp(argv[1], "stop", 4) == 0) {
 651                 if (argc != 2)
 652                         console_assign(stdin, "serial");
 653                 if (do_usb_stop_keyboard(0) != 0)
 654                         return 1;
 655                 printf("stopping USB..\n");
 656                 usb_stop();
 657                 return 0;
 658         }
 659         if (!usb_started) {
 660                 printf("USB is stopped. Please issue 'usb start' first.\n");
 661                 return 1;
 662         }
 663         if (strncmp(argv[1], "tree", 4) == 0) {
 664                 puts("USB device tree:\n");
 665                 usb_show_tree();
 666                 return 0;
 667         }
 668         if (strncmp(argv[1], "inf", 3) == 0) {
 669                 if (argc == 2) {
 670 #ifdef CONFIG_DM_USB
 671                         usb_device_info();
 672 #else
 673                         int d;
 674                         for (d = 0; d < USB_MAX_DEVICE; d++) {
 675                                 udev = usb_get_dev_index(d);
 676                                 if (udev == NULL)
 677                                         break;
 678                                 usb_display_desc(udev);
 679                                 usb_display_config(udev);
 680                         }
 681 #endif
 682                         return 0;
 683                 } else {
 684                         /*
 685                          * With driver model this isn't right since we can
 686                          * have multiple controllers and the device numbering
 687                          * starts at 1 on each bus.
 688                          */
 689                         i = simple_strtoul(argv[2], NULL, 10);
 690                         printf("config for device %d\n", i);
 691                         udev = usb_find_device(i);
 692                         if (udev == NULL) {
 693                                 printf("*** No device available ***\n");
 694                                 return 0;
 695                         } else {
 696                                 usb_display_desc(udev);
 697                                 usb_display_config(udev);
 698                         }
 699                 }
 700                 return 0;
 701         }
 702         if (strncmp(argv[1], "test", 4) == 0) {
 703                 if (argc < 5)
 704                         return CMD_RET_USAGE;
 705                 i = simple_strtoul(argv[2], NULL, 10);
 706                 udev = usb_find_device(i);
 707                 if (udev == NULL) {
 708                         printf("Device %d does not exist.\n", i);
 709                         return 1;
 710                 }
 711                 i = simple_strtoul(argv[3], NULL, 10);
 712                 return usb_test(udev, i, argv[4]);
 713         }
 714 #ifdef CONFIG_USB_STORAGE
 715         if (strncmp(argv[1], "stor", 4) == 0)
 716                 return usb_stor_info();
 717
 718         if (strncmp(argv[1], "part", 4) == 0) {
 719                 int devno, ok = 0;
 720                 if (argc == 2) {
 721                         for (devno = 0; ; ++devno) {
 722                                 stor_dev = usb_stor_get_dev(devno);
 723                                 if (stor_dev == NULL)
 724                                         break;
 725                                 if (stor_dev->type != DEV_TYPE_UNKNOWN) {
 726                                         ok++;
 727                                         if (devno)
 728                                                 printf("\n");
 729                                         debug("print_part of %x\n", devno);
 730                                         print_part(stor_dev);
 731                                 }
 732                         }
 733                 } else {
 734                         devno = simple_strtoul(argv[2], NULL, 16);
 735                         stor_dev = usb_stor_get_dev(devno);
 736                         if (stor_dev != NULL &&
 737                             stor_dev->type != DEV_TYPE_UNKNOWN) {
 738                                 ok++;
 739                                 debug("print_part of %x\n", devno);
 740                                 print_part(stor_dev);
 741                         }
 742                 }
 743                 if (!ok) {
 744                         printf("\nno USB devices available\n");
 745                         return 1;
 746                 }
 747                 return 0;
 748         }
 749         if (strcmp(argv[1], "read") == 0) {
 750                 if (usb_stor_curr_dev < 0) {
 751                         printf("no current device selected\n");
 752                         return 1;
 753                 }
 754                 if (argc == 5) {
 755                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 756                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 757                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 758                         unsigned long n;
 759                         printf("\nUSB read: device %d block # %ld, count %ld"
 760                                 " ... ", usb_stor_curr_dev, blk, cnt);
 761                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 762                         n = stor_dev->block_read(stor_dev, blk, cnt,
 763                                                  (ulong *)addr);
 764                         printf("%ld blocks read: %s\n", n,
 765                                 (n == cnt) ? "OK" : "ERROR");
 766                         if (n == cnt)
 767                                 return 0;
 768                         return 1;
 769                 }
 770         }
 771         if (strcmp(argv[1], "write") == 0) {
 772                 if (usb_stor_curr_dev < 0) {
 773                         printf("no current device selected\n");
 774                         return 1;
 775                 }
 776                 if (argc == 5) {
 777                         unsigned long addr = simple_strtoul(argv[2], NULL, 16);
 778                         unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
 779                         unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
 780                         unsigned long n;
 781                         printf("\nUSB write: device %d block # %ld, count %ld"
 782                                 " ... ", usb_stor_curr_dev, blk, cnt);
 783                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 784                         n = stor_dev->block_write(stor_dev, blk, cnt,
 785                                                 (ulong *)addr);
 786                         printf("%ld blocks write: %s\n", n,
 787                                 (n == cnt) ? "OK" : "ERROR");
 788                         if (n == cnt)
 789                                 return 0;
 790                         return 1;
 791                 }
 792         }
 793         if (strncmp(argv[1], "dev", 3) == 0) {
 794                 if (argc == 3) {
 795                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 796                         printf("\nUSB device %d: ", dev);
 797                         stor_dev = usb_stor_get_dev(dev);
 798                         if (stor_dev == NULL) {
 799                                 printf("unknown device\n");
 800                                 return 1;
 801                         }
 802                         printf("\n    Device %d: ", dev);
 803                         dev_print(stor_dev);
 804                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 805                                 return 1;
 806                         usb_stor_curr_dev = dev;
 807                         printf("... is now current device\n");
 808                         return 0;
 809                 } else {
 810                         printf("\nUSB device %d: ", usb_stor_curr_dev);
 811                         stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
 812                         dev_print(stor_dev);
 813                         if (stor_dev->type == DEV_TYPE_UNKNOWN)
 814                                 return 1;
 815                         return 0;
 816                 }
 817                 return 0;
 818         }
 819 #endif /* CONFIG_USB_STORAGE */
 820         return CMD_RET_USAGE;
 821 }
 822
 823 U_BOOT_CMD(
 824         usb,    5,      1,      do_usb,
 825         "USB sub-system",
 826         "start - start (scan) USB controller\n"
 827         "usb reset - reset (rescan) USB controller\n"
 828         "usb stop [f] - stop USB [f]=force stop\n"
 829         "usb tree - show USB device tree\n"
 830         "usb info [dev] - show available USB devices\n"
 831         "usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
 832         "    (specify port 0 to indicate the device's upstream port)\n"
 833         "    Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
 834 #ifdef CONFIG_USB_STORAGE
 835         "usb storage - show details of USB storage devices\n"
 836         "usb dev [dev] - show or set current USB storage device\n"
 837         "usb part [dev] - print partition table of one or all USB storage"
 838         "    devices\n"
 839         "usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 840         "    to memory address `addr'\n"
 841         "usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
 842         "    from memory address `addr'"
 843 #endif /* CONFIG_USB_STORAGE */
 844 );
 845
 846
 847 #ifdef CONFIG_USB_STORAGE
 848 U_BOOT_CMD(
 849         usbboot,        3,      1,      do_usbboot,
 850         "boot from USB device",
 851         "loadAddr dev:part"
 852 );
 853 #endif /* CONFIG_USB_STORAGE */